Flora of North America species comparison

1–5+, decumbent to erect, branched, herbaceous, often striate, leafy.

1–20+, procumbent or decumbent to diffusely ascending, branched, herbaceous, slender, leafy.

irregularly pinnate;

stipules glandlike, conic; petiolate or sessile;

rachis 2–3.5(–5.5) mm, not flattened;

leaflets 7–9(–12), blades usually elliptic to obovate, sometimes ovate, apex acute to obtuse, surfaces sparsely to densely puberulent or villosulous to strigillose.

palmate or irregularly subpinnate;

stipules glandlike;

subsessile to short-petiolate;

rachis 1–4 mm, ± flattened;

leaflets 3–5, blades obovate to oblanceolate, apex usually obtuse, sometimes acute, surfaces sericeous to canescent.

3–9(–11)-flowered.

1–3(–5)-flowered.

ascending or spreading, 10–80 mm, longer than leaves;

bract 1(–3)-foliolate, distal.

ascending or spreading, (2–)10–20 mm, shorter to longer than leaves;

bract absent (reduced to stipules) or unifoliolate, distal.

12–25 mm;

calyx (4.5–)5.5–10 mm, tube villosulous, lobes subulate;

corolla greenish white, white or yellow, fading to rose or reddish, claws shorter than calyx tube, banner ascending 45–90°, wings longer than banner and keel;

style nearly straight or basally curved, glabrous.

5–12 mm;

calyx 4–7 mm, tube villous, lobes subulate;

corolla yellow, turning orange-red, claws ± equaling calyx tube, banner ascending to 45°, wings unequal, longer than keel;

style slightly curved or straight, glabrous or finely puberulent.

persistent, exserted, brown, linear-oblong, straight, turgid, sometimes slightly constricted, incompletely septate, 25–42(–70) × 2–3 mm, leathery, apex short hook-beaked, dehiscent, smooth, margins smooth, thickened, glabrate.

persistent, exserted, divergent, brown, straight or curved at tip, turgid, slightly constricted, imperfectly septate, linear-oblong to oblong, (10–)18–25 × 1.5–2 mm, leathery, apex short-beaked, dehiscent, smooth, margins smooth, strigillose to glabrate.

5–9, olive to reddish brown, mottled, broadly ovoid, smooth.

2–5+, olive brown, mottled, roundish-oblong to angled, smooth, 2-veined.